"product industries" is correct and usable in written English.
You could use it in a sentence such as: "We specialize in the development of unique products for specific product industries."
In addition to process design and optimization which are the major concerns of commodity production, the specialty and formulated product industries face also new technical as well as marketing challenges (time to market, smart product design, choice or adaptation of generic, not dedicated plants etc).
People in the process and product industries view this as the next major challenge in control systems research and application.
The cosmeceutical and natural product industries are rapidly growing and many botanical agents are purported to improve hyperpigmentation disorders.
The goal is to have environmental organizations, government, forest product industries, oil and gas companies and the First Nations (Indians that have treaties with Canada) all sign on.
In the 1950s, accelerated amortization encouraged the expansion of export and new product industries and stimulated modernization in Canada, western European nations, and Japan.
Hardwood saw mill residues have traditionally not been favoured by the particleboard industry (or indeed other forest product industries) owing to their high density and extractives content.
Bending has significant importance in the sheet metal product industry.
Mothers and doctors, not to mention the cleaning product industry, warn of their dangers.
The paper and forest product industry -- which also includes pulp and lumber products -- has languished in recent months.
Lifecycle terms – such as technology, product, industry – are frequently used interchangeably and without clear definition.
Postharvest loss of quality is an important problem in the food and horticultural product industry.
